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Diffstat (limited to 'doc/src/sgml/ref/create_collation.sgml')
| -rw-r--r-- | doc/src/sgml/ref/create_collation.sgml | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/src/sgml/ref/create_collation.sgml b/doc/src/sgml/ref/create_collation.sgml index 5bc9af5499e..038797fce11 100644 --- a/doc/src/sgml/ref/create_collation.sgml +++ b/doc/src/sgml/ref/create_collation.sgml @@ -163,6 +163,13 @@ CREATE COLLATION [ IF NOT EXISTS ] <replaceable>name</replaceable> FROM <replace <title>Notes</title> <para> + <command>CREATE COLLATION</command> takes a <literal>SHARE ROW + EXCLUSIVE</literal> lock, which is self-conflicting, on the + <structname>pg_collation</structname> system catalog, so only one + <command>CREATE COLLATION</command> command can run at a time. + </para> + + <para> Use <command>DROP COLLATION</command> to remove user-defined collations. </para> |